Here's something you should know about yourself. When choosing between two options, your decision is heavily influenced by whether you are asking yourself: "which is better" or "which is worse." 1/9

In research by Shafir, scientists asked subjects which of these two vacation spots they'd PREFER: one with average weather, beaches, hotels, warm water and decent nightlife -- or one with great weather, beaches, and hotels, but cold water and no nightlife. Most chose the latter.
But when told to imagine they had reserved both and had to CANCEL one or the other: one with average weather, beaches, hotels, warm water and decent nightlife -- or one with great weather, beaches, and hotels, but cold water and no nightlife. Most chose the latter. 3/9
Same information, different choice, and the only difference was how the question was framed: which would you prefer or which would you cancel? 4/9
They also asked people to imagine deciding case for custody of a child. One parent had average income, health, work hours, rapport with the child, and a stable social life. The other had above average income, great rapport, but worked long hours and had an active social life. 5/9
When asked to AWARD custody, most people chose the above-average parent without a lot of spare time. When asked to DENY custody, most people chose the exact same parent. 6/9
Same information, different choice, and the only difference was how the question was framed: which would you award or which would you deny? 7/9
When looking for good reasons, you base your decision on what seems better-than-average. When looking for bad reasons, you base your decision on what seem worse-than-average. And you do this for everything -- potential partners, new cars, places to live, eat, work, etc. 8/9
This is the essence of motivated reasoning. You don't carefully contemplate all the pros and cons of your choices, you use either pros or cons as a guide depending on your motivation. In other words, when you are looking for a reason to choose A over B, you will find it. 9/9

More from Life

THREAD: 12 Things Everyone Should Know About IQ

1. IQ is one of the most heritable psychological traits – that is, individual differences in IQ are strongly associated with individual differences in genes (at least in fairly typical modern environments). https://t.co/3XxzW9bxLE


2. The heritability of IQ *increases* from childhood to adulthood. Meanwhile, the effect of the shared environment largely fades away. In other words, when it comes to IQ, nature becomes more important as we get older, nurture less.
https://t.co/UqtS1lpw3n


3. IQ scores have been increasing for the last century or so, a phenomenon known as the Flynn effect. https://t.co/sCZvCst3hw (N ≈ 4 million)

(Note that the Flynn effect shows that IQ isn't 100% genetic; it doesn't show that it's 100% environmental.)


4. IQ predicts many important real world outcomes.

For example, though far from perfect, IQ is the single-best predictor of job performance we have – much better than Emotional Intelligence, the Big Five, Grit, etc. https://t.co/rKUgKDAAVx https://t.co/DWbVI8QSU3


5. Higher IQ is associated with a lower risk of death from most causes, including cardiovascular disease, respiratory disease, most forms of cancer, homicide, suicide, and accident. https://t.co/PJjGNyeQRA (N = 728,160)

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Time for a 🧵 to learn the above from @iManasArora

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A brief analysis and comparison of the CSS for Twitter's PWA vs Twitter's legacy desktop website. The difference is dramatic and I'll touch on some reasons why.

Legacy site *downloads* ~630 KB CSS per theme and writing direction.

6,769 rules
9,252 selectors
16.7k declarations
3,370 unique declarations
44 media queries
36 unique colors
50 unique background colors
46 unique font sizes
39 unique z-indices

https://t.co/qyl4Bt1i5x


PWA *incrementally generates* ~30 KB CSS that handles all themes and writing directions.

735 rules
740 selectors
757 declarations
730 unique declarations
0 media queries
11 unique colors
32 unique background colors
15 unique font sizes
7 unique z-indices

https://t.co/w7oNG5KUkJ


The legacy site's CSS is what happens when hundreds of people directly write CSS over many years. Specificity wars, redundancy, a house of cards that can't be fixed. The result is extremely inefficient and error-prone styling that punishes users and developers.

The PWA's CSS is generated on-demand by a JS framework that manages styles and outputs "atomic CSS". The framework can enforce strict constraints and perform optimisations, which is why the CSS is so much smaller and safer. Style conflicts and unbounded CSS growth are avoided.